Question

Lesson 3 : wrapping up Unit 3

Answer 1

Answer:

• 9 The water levels are constant in estuaries

Explanation:

• 10.  Black sands are found when tides are particularly higher.
• 11. Both tides and currents are predictable movements of water.
• 12. The salinity of brackish water can vary with the tides.
• 13. The barnacles attach themselves to seaweed and feed on it.
• 14. Ocean helps to lessen global warming by absorbing lots of carbon dioxide.
• 15. Five Solomon islands have disappeared because of erosion and increasing seas.
• 16. Bottom-feeding fish are not part of the benthic community.